#box {
  width: 1200px;
  margin: 0 auto;
}
#box div {
  height: 300px;
  background-color: red;
}
#box ul > li {
  list-style: none;
}
#box > div {
  background-color: pink;
}/*# sourceMappingURL=01sass语法嵌套.css.map */